Improved mold-board press



A. THOMPSON. Plow Iron. No. 103,942. Patented June 7,1870.

MPETERS, PNOTO-LITHOGRAPNEEL WASHINGTON, D c.

itnitml san ANDREW THOMPSON, OF OTTAWA, ILLINOIS.

Letters Patent No. 103,942, dated n ne 7 1870.

IMPROVED IVIOLD-BOARD PRESS.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom it may concern Be it known that I, ANDREW THOMPSON, ot'Ottawa, in the county of La Salle, in the State of Illinois, haveinvented a new and improvedllIold-board Press; and I do hereby declarethat the following is a full, clear, and exact description of theconstruction and operation of the same, reference being bad to theannexed drawing making part of this specification, in which- Figures 1and 2 are rertical'plans;

Figure 3 is a horizontal plan; and

Figure 4 is a section through a l), fig. 1. a

This invention relates to an improvement in amachine used inplow-fiictories for the purpose of giving the proper bend to themold-boards, they being previously heated in a furnace.

The improvement consists in using an eccentric driven by cog-wheels, toobtain the required pressure to shape the mold-boards.

The improvement also consists in so constructing the machine that, byits simplicity and cheapness of constructiomand also by its handiness inoperation, it is best adapted for practical use in plow-factories.

I construct a'frame of the two vertical timbers A A, which are united bythe cross-pieces B B B", and which stand on the foot-boards G G, bracedby the bracesD D D D. a

A shaft, E, passes through thimble-boxes in the timbers A A, and has, inthe middle of its length, an eccentric, F, the rod. G of which' isattached to the two vertical rods H H, which pass down through thecross-timber B and are riveted to the plate I.

Two other rods, J J, also pass through. the timber 13', and are boltedto the plate K. I

This plate K receives the bottom mold, L, which is fastened thereto bymeans of two bolts, in such a manner that it can easily be taken off andexchanged for another of a different shape.

The top mold, L, is fastened to the plate I in a similar way.

The shaft E has, on one side, a cog-wheel, M, into which meshes apinion, N, driven by a pulley, O, placed on one end of the shaft P,while at the other end is a fly-wheel, Q, the object of which is toassist in carrying the eccentric F over the point of greatest pressure,which is at the lowest part of its stroke. A

The cog-wheel M is loose ou'the shaft E, and has fastened to it aclutch, R, whichcngages intoa similar clutch It, which slides on theshaft E on parallel keys by means of the lever S.

\Vhat I claim as my invention, and desire to secure by Letters Patent,is-

The mold-board press, made as described, that is to say, of theeccentric F, the rod G, the rods H H and J J, the cog-wheel M, andpinion N, the pulley O, the fly-wheel Q, the clutch R and 1t, and thelever S, in combinationwith the molds L and L, arranged together asdescribed and for the purpose specified.

4 ANDREW THOMPSON.

\Vitnesses E. Rosa, 0. W. DENHAM.

